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← The problem of cars in cities is a geometry problem, not a technology…
15 connected korrents · 15 moments on record from 7 Jun 2010 to 4 Sept 2026.
Everything filed under physics
physics
Everything filed under self-driving cars
self-driving cars
Everything filed under robotics
robotics Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: The problem of cars in cities is a geometry problem, not a technology problem: no invention creates room for everybody's car. The problem of cars in cities is a geometry problem, not a technology problem: no invention creates room for everybody's car. Last stated 16 years ago
7 Jun 2010
JW
Jarrett Walker — holds since 2010-06-07 — tap for who they are
Same subject: Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all. — tap to centre the map on it Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all. Last stated 10 years ago
21 Jul 2016
JW
Jarrett Walker — holds since 2016-07-21 — tap for who they are
Same subject: There is no material problem, whether created by nature or by technology, that cannot be solved with more technology. — tap to centre the map on it There is no material problem, whether created by nature or by technology, that cannot be solved with more technology. Last stated 3 years ago
16 Oct 2023
MA
Marc Andreessen — holds since 2023-10-16 — tap for who they are
Same subject: Beyond neighbourhood distances, cars and public transport are substitutes for each other, so a trip taken by rail really is a trip not taken by car. — tap to centre the map on it Beyond neighbourhood distances, cars and public transport are substitutes for each other, so a trip taken by rail really is a trip not taken by car. Last stated 6 months ago
10 Mar 2026
AL
Alon Levy — holds since 2026-03-10 — tap for who they are
Same subject: Rich people will have self-driving cars and the city will not be built around them. — tap to centre the map on it Rich people will have self-driving cars and the city will not be built around them. Last stated 16 years ago
7 Jun 2010
JW
Jarrett Walker — holds since 2010-06-07 — tap for who they are
Same subject: No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true. — tap to centre the map on it No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true. Last stated 12 years ago
4 Nov 2014
JW
Jarrett Walker — holds since 2014-11-04 — tap for who they are
Same subject: The fundamental problem spatial intelligence must solve is understanding the geometry, the structure and the physics of a space. — tap to centre the map on it The fundamental problem spatial intelligence must solve is understanding the geometry, the structure and the physics of a space. Last stated 3 days ago
4 Sept 2026
FL
Fei-Fei Li — holds since 2026-09-04 — tap for who they are
Same subject: A far-fetched idea earns its place in physics only when you can go out and look for its observational consequences. — tap to centre the map on it A far-fetched idea earns its place in physics only when you can go out and look for its observational consequences. Last stated 3 years ago
3 Dec 2023
LR
Lisa Randall — holds since 2023-12-03 — tap for who they are
Same subject: A frontier lab should not spend its researchers harvesting results out of today's models; the payoff is in building the next one. — tap to centre the map on it A frontier lab should not spend its researchers harvesting results out of today's models; the payoff is in building the next one. Last stated 2 months ago
26 Jun 2026
NB
Noam Brown — holds since 2026-06-26 — tap for who they are
Same subject: A theory of everything would not finish physics: Turing and Church laid down computation's theory of everything in the 1930s and we have spent ninety years exploring the consequences. — tap to centre the map on it A theory of everything would not finish physics: Turing and Church laid down computation's theory of everything in the 1930s and we have spent ninety years exploring the consequences. Last stated 5 months ago
7 Apr 2026
MN
Michael Nielsen — holds since 2026-04-07 — tap for who they are
Same subject: A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data. — tap to centre the map on it A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data. Last stated 9 months ago
25 Nov 2025
IS
Ilya Sutskever — holds since 2025-11-25 — tap for who they are
Same subject: A good robotaxi demonstration in one city does not mean the company is ready to scale the service. — tap to centre the map on it A good robotaxi demonstration in one city does not mean the company is ready to scale the service. Last stated a year ago
8 Jul 2025
TL
Timothy B. Lee — holds since 2025-07-08 — tap for who they are
Same subject: A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled. — tap to centre the map on it A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled. Last stated 2 years ago
21 May 2024
TL
Timothy B. Lee — holds since 2024-05-21 — tap for who they are
Same subject: A highly dynamic economy that cheaply mass-produces robots may increase rather than decrease the risk of Malthusian resource dilemmas. — tap to centre the map on it A highly dynamic economy that cheaply mass-produces robots may increase rather than decrease the risk of Malthusian resource dilemmas. Last stated 3 years ago
1 Oct 2023
TC
Tyler Cowen — holds since 2023-10-01 — tap for who they are
Same subject: A humanoid robot is the wrong tool on a factory floor, because a machine specialised in the task beats it. — tap to centre the map on it A humanoid robot is the wrong tool on a factory floor, because a machine specialised in the task beats it. Last stated a year ago
6 Apr 2025
MH
Molson Hart — holds since 2025-04-06 — tap for who they are
Same subject: A physical AI agent has to be safe on day one, because you cannot ship something merely good enough and let users find the edge cases. — tap to centre the map on it A physical AI agent has to be safe on day one, because you cannot ship something merely good enough and let users find the edge cases. Last stated a month ago
3 Aug 2026
DD
Dmitri Dolgov — holds since 2026-08-03 — tap for who they are
At the centre
The problem of cars in cities is a geometry problem, not a technology problem: no invention creates room for everybody's car.
Holds JW Jarrett WalkerRead this korrent →
Technology never changes geometry: a transport problem has to be solved spatially before it is solved at all.
Holds JW Jarrett Walker
There is no material problem, whether created by nature or by technology, that cannot be solved with more technology.
Holds
Beyond neighbourhood distances, cars and public transport are substitutes for each other, so a trip taken by rail really is a trip not taken by car.
Holds AL Alon Levy
Rich people will have self-driving cars and the city will not be built around them.
Holds JW Jarrett Walker
No dense city anywhere runs without heavy reliance on transit, and no new transport technology changes the space arithmetic that makes that true.
Holds JW Jarrett Walker
The fundamental problem spatial intelligence must solve is understanding the geometry, the structure and the physics of a space.
Holds FL Fei-Fei Li
A far-fetched idea earns its place in physics only when you can go out and look for its observational consequences.
Holds LR Lisa Randall
A frontier lab should not spend its researchers harvesting results out of today's models; the payoff is in building the next one.
Holds NB Noam Brown
A theory of everything would not finish physics: Turing and Church laid down computation's theory of everything in the 1930s and we have spent ninety years exploring the consequences.
Holds MN Michael Nielsen
A five-year-old's vision is already good enough to drive a car, on a tiny and strikingly undiverse amount of data.
Holds IS Ilya Sutskever
A good robotaxi demonstration in one city does not mean the company is ready to scale the service.
Holds TL Timothy B. Lee
A huge fleet collecting driving data is not a silver bullet for self-driving, because the data arrives unlabelled.
Holds TL Timothy B. Lee
A highly dynamic economy that cheaply mass-produces robots may increase rather than decrease the risk of Malthusian resource dilemmas.
Holds TC Tyler Cowen
A humanoid robot is the wrong tool on a factory floor, because a machine specialised in the task beats it.
Holds MH Molson Hart
A physical AI agent has to be safe on day one, because you cannot ship something merely good enough and let users find the edge cases.
Holds DD Dmitri Dolgov